I got a big error c446, c447, c471 for a copier e856 , change the thermistor no change sometimes the Web not rotation, I'll change all the fuser unit, the m/c work good about 3o minutes and decrease the speed more and more and shutdown and give error fuser reset it 0+8 and 2002 value are between 7 and 24 reset to 0 but the problem as its, I'll change the NVRAM . It work two days and return to the same broblem. .... help me friends
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Re: errors code for e856
I came across this on an eS523 last week. There is a push switch operated by an arm at the rear of the fuser. It cuts the AC power to the IH board, and connects directly to that lower connector on the rear frame.
If you develop resistance in the switch of 0.9 ohms or more when it's closed, you'll get intermittent C471 errors.
If the switch is good, but not fully actuated by the ear on the fuser, you'll get C446_7, C467_7, C467_24. When the plunger on the push switch is fully released it's ~8mm. When the push switch is just being made it's at 5.5mm. When the push switch is fully compressed it's 3mm. So anywhere from 4.5mm to 4.0mm when actuated is desirable. Anything greater than 5.5mm is open. 5.0mm to 5.5mm gives errors, resistance anywhere from 0.9 to 179 ohms. There doesn't seem to be a simple adjustment here. I cut some rectangular spacers to slip over the push switch to space it out 1.0mm closer to the front, to the actuator. At first I was operating the push switch with my finger, but that doesn't tell you anything about how it's actuated by the fuser. Remove the switch leads, clip on your meter, then actuate the switch with the drawer.
=^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
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